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Run 13 RHIC Machine/Experiments Meeting
26 March 2013
Agenda: • Polarization update/issues (E. Aschenauer)• Status Reports
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Run 13 plan based on 20 weeks cryo operationand Fischer et.al. RHIC Collider Projections (FY 2013 – FY 2017), 27 Sep 2012
11 Feb, Begin cool-down to 4.5K 15 Feb, Cool-down to 4.5K in Blue and Yellow Ring complete, begin magnet setup 26 Feb, first collisions 15 Feb -1 Mar, RHIC √s = 510 GeV pp machine setup 1-8 Mar, machine ramp-up with 8 hr/night for experiment setup 9 Mar (store 17201), begin √s = 510 GeV pp physics run
today, 26 Mar…
• 27 May, end 15 cryo weeks.
• 6 Jun, switch to √s = 15 GeV/n AuAu if pp goals are met and end 12.7 week √s = 510 GeV pp physics run
• 27 Jun, end ~2.5 week √s = 15 GeV/n AuAu physics run or 15.9 week √s = 510 GeV pp physics run, begin cryo warm-up
• 30 June, cryo warm-up ~complete (19.9 cryo-weeks)
See http://www.rhichome.bnl.gov/AP/Spin2013/ for the Run Coordinator’s detailed plan
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PHENIX ZDC signal changed to one without dead time
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Ions/bunch (maximum)
Past WeekPhysics stores
Lpeak(maximum)(2.3 mb xsection)
Using Run 13 cross section for PHENIX
Laverage(maximum)(2.3 mb xsection)
singles corrected
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Preliminary, with Run 12 cross sections, PHENIX singles corrected, STAR not singles correctedwith Run 13 cross sections
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Preliminary, with Run 12 cross sections, PHENIX singles corrected, STAR not singles corrected
PHENIX Goal, 250 pb-1 recorded, 750 pb-1 delivered, ≥ 55% polarizationSTAR Goal, 165 pb-1 recorded, 275 pb-1 delivered, ≥ 55% polarization
PHENIX GOAL
STAR GOAL
Decision time for low energy AuAu
15 cryo weeks
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https://wiki.bnl.gov/rhicspin/Polarimetry/H-jet/Run13
Yellow average = 42.4 ± 1.2%Blue average = 48.1 ± 1.1%
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Yellow average = 45.7 ± 0.6%Blue average = 53.3 ± 0.6%
http://www.phy.bnl.gov/cnipol/fills/
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http://www.phy.bnl.gov/cnipol/fills/
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Additional Information
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Blue jet target weighted average = 50.3% ± 0.5%Yellow jet target weighted average = 53.4% ± 0.5%
And Yellow beam at injection jet target Run 12 result = 63.0 ± 4.4%
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+$1,132K in BNL bank through Feb 2013
Feb 2013 bill$28.89 actualbilled at $53/Mwhr
Dec-Jan-Feb
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http://www.bnl.gov/cad/esfd
Scheduling Physicist: Andrei Poblaguev
AGS-Booster-Tandem/Linac/EBIS Startup
RHIC Cryo Cooldown to 45 deg K
RHIC Cryo Cooldown/Warm-up
RHIC Cryo Operation
RHIC Cryo off
RHIC STAR & PHENIX
RHIC Research with s = 510 GeV pp
RHIC Research with s = 15 GeV/n AuAu (~ 3 weeks if 510 GeV pp goals met)
Particle Accelerator Conference (IPAC)
NSRL (NASA Radiobiology)
NSRL (NRO)
BLIP (Isotopes)
BLIP (other)
Shutdown (RHIC)
C-A Operations-FY13
Program Element Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
FY 2013
4 Feb 13
setup with beams
Sep
concurrent with RHIC
ramp up luminosity
20 weeks
setup as required
10 weeks physics
16 weeks
15.5 weeks
.4 weeks
planned, budget permitting, Preliminary
4 Oct 19 Nov
12C28 Jan 8 Feb
30 Jun
17 Dec
13A
18 Mar
5.5 weeks
10 May TBD TBD
11 Feb
13B
TBD
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For Run 13 the PAC recommends the following (in order of priority):
1. Running with polarized proton collisions at 500 GeV to provide an integrated luminosity of 750 pb-1 at an average polarization of 55%.
2. Depending on the amount of running time remaining after priority #1a. If less than 3 weeks remain, a week of 200 GeV Au+Au collisions.b. If at least 3 weeks of running time remain, 3 weeks of 15 GeV Au+Aucollisions.
3. 8 days of 62 GeV p+p collisions.
4. At the discretion of the ALD, 4 days of low-luminosity running to accomplish the pp2pp goals.